This car was one of the testers for the beta BBK-XL. I've posted a couple threads about it before on here.
Now it has the final production version of the BBK-XL, the BBK-B.
Results where surprising.
2006 Evo GSR
Modifications:
GST 2.3L stroker
Oversized valves in head (no head porting)
3" Downpipe
3" Agency Power catback
RRE rally cat (resonated test pipe)
Titek V2 tubular 02 housing
Ported stock exhaust manifold
CBRD BBK-B turbo
GST open cone air filter
Perrin FMIC
AMS LICP
Synapse BOV
Cosworth M2 mivec cams
FIC "BlueMax" 1550cc injectors
AEM fuel Rail
AMS fuel return line
Denso IKH24 spark plugs (1 heat range colder)
BlaqOps Progressive double pumper system
GM 3 port boost solenoid using ECU-controlled boost
Stock ECU (Tephra V7 ROM)
Stock MAF
Stock Intake Manifold
Stock Upper IC pipes
E85
33-34psi peak, 30psi out the top
I decided to overlay both 3rd and 4th gear pulls to show the difference a gear makes in spool up, and because of that, the torque and area under the curve differences. Obviously after seeing this,
you should always ask what gear a particular posted dyno chart was made in.
On this particular car, at 4300rpm, there was a 100 wtq difference between the gears. That nice 2.3L breathing much better with more exhaust gases to the turbo with earlier spool in 4th.
518 whp / 509 wtq in 4th gear
510 whp / 464 wtq in 3rd gear
- Bryan